I know that using an external LCD taxes the integrated video quite a bit (2.2ghz Santa Rosa Macbook), but I've been shocked at how much the temps rise (and subsequently causes the fan to run). Without my external 24" LCD connected my Macbook is stable around 36-38C, but the moment I connect it my temps immediately jump (within 10-15 seconds) to around 60C. Within 2-3 minutes the temp stabilizes around 64-66C, under nearly no load. Under load (ripping DVD's, etc), temps regularly get around 90-91C. Anyone else?